//elem 是对带有 id="elem" 的 DOM 元素的引用elem.style.background ='red';//id="elem-content" 内有连字符,所以它不能成为一个变量//...但是我们可以通过使用方括号 window['elem-content'] 来访问它 ……除非我们声明一个具有相同名称的 JavaScript 变量,否则它具有优先权: let elem=5;//现在 el...
1、getElementById根据指定Id得到html元素,所以只能得到唯一的html元素对象, 如: varusername=document.getElementById('username'); 即得到上面的id为username的input元素 2、getElementsByName根据name属性得到html标记对象的数组,因为name有多个,所以返回的是元素的数组,而不是一个元素 document.getElementsByName(...
Get the actual computed style of an element. This factors in browser default stylesheets as well as external styles you’ve specified. varelem=document.querySelector('#some-elem');varbgColor=window.getComputedStyle(elem).backgroundColor;
Get the content of an Iframe in Javascript – crossbrowser solution for both IE and Firefox http://roneiv.wordpress.com/2008/01/18/get-the-content-of-an-iframe-in-javascript-crossbrowser-solution-for-both-ie-and-firefox/ Ok, let’s imagine the use case: I have an iframe...
javascript getElementByTagName查找子标签元素 js查找子字符串,一、基本应用场景Q1:给定字符串a="xxx",给定字符串b="xxxxxx",判定a是否为b的子串。(基础手写实现方法)functioncheckHas(longStr,shortStr){for(leti=0;i<longStr.length-shortStr.length+1;i++){for(l
In JavaScript, you can use the nextElementSibling and previousElementSibling properties to get the next and previous siblings of an element. Let us say you've got the following list of items: 🍔 🍕 🍹 🍲 🍩 Now you want to get the list item immediately before and after #drin...
You can get the first element of a JavaScript array in the following ways: Get the First Element Without Modifying the Original Array Using either of the following approaches does not mutate the original array when trying
百度试题 结果1 题目在JavaScript中,`document.getElementById()`方法用于? A. 获取元素的CSS样式 B. 获取元素的文本内容 C. 通过元素的ID获取元素 D. 通过元素的类名获取元素 相关知识点: 试题来源: 解析 C 反馈 收藏
The offsetHeight consists of the element’s height which also includes any padding, borders, and horizontal scrollbar (if present). console.log(element.offsetHeight); Output: 60 Similar to the clientHeight property, the offsetHeight property will also take 8px padding, content’s height which...
function getContentFromIframe(iFrameName) { var myIFrame = document.getElementById(iFrameName); var content = myIFrame. contentWindow .document.body.innerHTML; //Do whatever you need with the content }